20042262 has 16 divisors (see below), whose sum is σ = 44538480. Its totient is φ = 6680736.

The previous prime is 20042261. The next prime is 20042263. The reversal of 20042262 is 26224002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20042261) and next prime (20042263).

It is a super-3 number, since 3×20042262³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185523 + ... + 185630.

It is an arithmetic number, because the mean of its divisors is an integer number (2783655).

Almost surely, 2^20042262 is an apocalyptic number.

20042262 is an abundant number, since it is smaller than the sum of its proper divisors (24496218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20042262 is a wasteful number, since it uses less digits than its factorization.

20042262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371164 (or 371158 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20042262 is about 4476.8584967586. The cubic root of 20042262 is about 271.6328216752.

Adding to 20042262 its reverse (26224002), we get a palindrome (46266264).

The spelling of 20042262 in words is "twenty million, forty-two thousand, two hundred sixty-two".